Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30407
Title: Development of emission factors and emission inventories for motorcycles and light duty vehicles in the urban region in Vietnam
Authors: Tung, HD
Tong, HY
Hung, WT 
Anh, NTN
Keywords: Driving cycles
Emission inventories
Fuel consumption
On-road data
Vehicle survey
Issue Date: 2011
Publisher: Elsevier Science Bv
Source: Science of the total environment, 2011, v. 409, no. 14, p. 2761-2767 How to cite?
Journal: Science of the Total Environment 
Abstract: This paper reports on a 2-year emissions monitoring program launched by the Centre for Environmental Monitoring of the Vietnam Environment Administration which aimed at determining emission factors and emission inventories for two typical types of vehicle in Hanoi, Vietnam. The program involves four major activities. A database for motorcycles and light duty vehicles (LDV) in Hanoi was first compiled through a questionnaire survey. Then, two typical driving cycles were developed for the first time for motorcycles and LDVs in Hanoi. Based on this database and the developed driving cycles for Hanoi, a sample of 12 representative test vehicles were selected to determine vehicle specific fuel consumption and emission factors (CO, HC, NOx and CO 2). This set of emission factors were developed for the first time in Hanoi with due considerations of local driving characteristics. In particular, it was found that the emission factors derived from Economic Commission for Europe (ECE) driving cycles and adopted in some previous studies were generally overestimated. Eventually, emission inventories for motorcycles and LDVs were derived by combining the vehicle population data, the developed vehicle specific emission factors and vehicle kilometre travelled (VKT) information from the survey. The inventory suggested that motorcycles contributed most to CO, HC and NOx emissions while LDVs appeared to be more fuel consuming.
URI: http://hdl.handle.net/10397/30407
DOI: 10.1016/j.scitotenv.2011.04.013
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